Machinery for preparing or treating loam, clay, and the like.



P. BAUE- MACHINERY FOR PREPARING 0R TREATING LOAM, CLAY, AND THE LIKE. APPLIOATION FILED 001'. 12,1905.

909, 1 33 Patented Jan. 12, 1909.

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TYNTTED STATES PATENT @FFTQE.

PAUL BAUR, OF BRUGG, SWITZERLAND.

ldACHINERY FOR PREPARENG OB, TREATING LGAM, CLAY, AND THE LIFE.

Application filed October 12, 1905.

Specification of Letters Patent.

Patented Jan. 12, 1909.

Serial No. 282,409.

To all whom it may concern:

Be it known that 1, PAUL BAUR, a citizen of Switzerland, residing in Brugg, in the Canton of Aargau, Republic of Switzerland, whose post-ofiice address is Brugg, have invented certain new and useful Improvements in Machinery for Preparing or Treating Loam, Clay, and the Like; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

I have applied for patent in Switzerland on December 3d, 1904, in Austria on May 29th, 1905, in Hungary on June 5th, 1905, in France on Sept. 22nd, 1905, in Belgium on Sept. 25th, 1905, in Italy on Sept. 26th, 1905, in Germany on Sept. 26, 1905.

To render it possible to produce baked goods, and other products from loams, clays, and like substances, of various kinds, as they come from the pits, it is necessary to first subject them to a preliminary treatment or preparation; and in according to the nature of the raw material, this treatment or preparation takes the form of kneading, mixing, rolling of the material and crushing or elimination of foreign substances, which treatments or manipulations are carried out by various mechanical means or machines.

In the machine, according to this invention, the loam, clay, et cetera, is pressed through holes in the wall or shell of a rotary cylinder, whereby it is rolled, kneaded, and mixed, and foreign substances are also either crushed or eliminated. The wall or shell of this cylinder (one or both ends of which is or are open) is provided with holes referred to, in such a manner that, when the cylinder is turned, and the loam, clay, et cetera, pressed against the mantle (which is done by a second cylinder), it presses through the holes into the interior of the cylinder, and passes out again at one or both ends.

In the annexed drawing which illustrates the invention, Figure 1 shows the machine in longitudinal section, and Fig. 2 shows it in transverse section.

The machine is of the roller type, having two cylinders, A and B both perforated according to the invention. vThe cylinders A and B each have a shaft C on which the drum D is mounted and fixed; and this drum has a partition, as shown, extending to the wall or shell E, and from it radially disposed ribs R extend to the edge of the cylinder. The wall or shell E surrounds these parts D and R, 't being attached to the ribs R of the drum. The small holes in the wall or shell E of each cylinder are designated L. They are tapered outwards from the periphery of the shell, so as to be wider on the inside, and may be of any desired form. Preferably these holes are made in the form of slots witi a length of about 1. to 2 and a breadth of about to on the outside.

The bearings of the cylinders A and B are disposed in the frame F, and these cylinders are driven by spur wheels from shaft (3-. In order that the cylinders A, B, may be able to move away from each other when a hard object in the loam, clay, et cetera, passes in between them, the bearings of the cylinder B are capable of sliding in the frame F, being norm ally held and forced up towards the cylinder A, by springs H.

The material to be worked is placed in the upper space between the cylinders A and B, and is pressed by the cylinders themselves through the holes in the cylinder into their interior, in the direction of the arrows, and then passes out at the two open ends, to be further dealt with.

The raw material which is pressed through the holes L falls in the direction of the arrows and is thoroughly mixed. This mixing is produced not only as the material comes to the cylinders and passes through said holes (at which tree, it will be ob served, large lumps of clay or loam are first flattened or laid around the surfaces of the cylinders, so that other material mixes thoroughly therewith before they are actually forced through the holes), but after the material enters the cylinders, whereupon the ribs R, which are substantially coextensive in length with the length of the cylinders, thoroughly agitate it before discharging the material. The mixing effected is therefore carried to the highest degree of thoroughness, while small stones either pass directly through the holes or are first crushed by the cylinders before being intermingled with the more or less plastic bulk of the material. Hard larger stones, pieces of iron or wood, roots and the like fall down between the cylinders because cylinder B is movable with respect to cylinder A; only useless material, however, is rejected in this way, as will be obvious. Extraneous substances, such as great hard stones, iron, et cetera, pass between the rollers, and fall into' a suitable receptacle below the cylinders, and are thus eliminated from the useful material.

What I claim is:

1. In a machine for mixing loam, clay and the like and for separating from the same stones and other hard bodies contained therein, the combination or" the frame and two cylinders journaled in said frame in close proximity to each other with their axes of rotation parallel and movable one toward the other, each cylinder comprising a drum formed with cylindrically arranged ribs and a perforate detachable mantle surrounding the drum and attached to said ribs, and each cylinder being open at both ends to allow the free passage of the treated material, substantially as described.

2. In a machine for mixing loam, clay and the like and for separating from the same stones and other hard bodies contained therein, the combination of the frame and two cylinders journaled in said frame in close proximity to each other with their axes of rotation parallel andmovable one toward the other, each cylinder comprising a part1- tion wall formed with cylindrically and radially arranged ribs and a mantle provided with exceedingly narrow slots through which the material being treated is pressed into the cylinder, and each cylinder being open at both ends to allow the free passage of the treated material, perfectly mixed, substantially as described.

3. In a machine for mixing loam, clay and the like and for eparating from the same stones and other hard bodies contained therein, the combination of the frame and two cylinders journaled in said frame in close proximity to each other with their axes of rotation substantially parallel, and movable one toward the other, one of said cylinders comprising a drum formed with cylindrically arranged ribs and a perforate mantle surrounding and attached to said ribs and open at one end, said ribs being substantially coextensive in length with the axial dimension of the mantle, substantially as described.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

PAUL BAUR.

'Witnesses HERMANN HUBER, A. LIEBERKNEOHT. 

